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Finding the Fourth Proportional to 90,035.92, 124,243.08 and 49,749.20

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Solution

The fourth proportional to 90,035.92, 124,243.08 and 49,749.20 is: 68,650.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,035.92 : 124,243.08 = 49,749.20 : x
  2. Step 2: Convert to fraction form
    90,035.92/124,243.08 = 49,749.20/x
  3. Step 3: Cross multiply
    90,035.92x = 124,243.08 × 49,749.20
  4. Step 4: Simplify right side
    90,035.92x = 6,180,993,835.54
  5. Step 5: Solve for x
    x = 6,180,993,835.54/90,035.92
  6. Step 6: Final answer
    x = 68,650.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.